RE: Any ideas???

["Wills, Mike N. (TC)" <MNWills@xxxxxxxxxxxxxx>]

What does your statement look like?

-----Original Message-----
From: Gurrieri Fabrizio [mailto:fabrizio.gurrieri@bartolini.it]
Sent: Wednesday, June 26, 2002 1:51 AM
To: rpg400-l@midrange.com
Subject: Any ideas???


This is a multi-part message in MIME format.
--
[ Picked text/plain from multipart/alternative ]
Hi,
   I have 3 big files with the same record format, they are divided by date
=> the first are the most recent records, the second the old records and the
third the historical records (totally are 63 milion of records). Now I have
to run SQL (into an SQLRPGLE) on all of these three files order by date and
other three fields with some selection and I've the problem below:
when I run SQL for a period that is completely included in the first file
the SQL (it works using UNION) read all three files and naturally it works
for for too much hours.
How can I optimize my SQL statement, any ideas???

Thanks a lot


Fabrizio Gurrieri - BARTOLINI SPA
Via E.Mattei  42 - 40138 BOLOGNA (Italy)
Tel:+39 051 6015593 - Fax:+39 051 530365
E-Mail: Fabrizio.Gurrieri@bartolini.it
Internet: http://www.bartolini.it <http://www.bartolini.it/>


_______________________________________________
This is the RPG programming on the AS400 / iSeries (RPG400-L) mailing list
To post a message email: RPG400-L@midrange.com
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/cgi-bin/listinfo/rpg400-l
or email: RPG400-L-request@midrange.com
Before posting, please take a moment to review the archives
at http://archive.midrange.com/rpg400-l.